Your files never leave your device. All processing happens in your browser.
Open Img Stop JPG to WebP, drop your JPG photos and set the Quality, 90% by default or 75–85% for smaller web images. Check the preview size, click Convert to WebP and download the files one by one or as a ZIP.
About the JPG to WebP
Img Stop JPG to WebP converts JPG and JPEG photos into the modern WebP format. WebP was made for the web: at the same visual quality, a WebP photo is usually about 25–35% smaller than a JPG. Smaller images mean faster pages, lower data use for visitors on mobile, and better page speed scores.
All current versions of Chrome, Edge, Firefox, Safari and Opera can show WebP, and WordPress accepts WebP uploads. The converter keeps the pixel width and height and lets you choose the quality. The preview shows the new size next to the original, so you can find the best balance before you convert the whole batch.
Key features
- Smaller photosWebP is usually about 25–35% lighter than JPG at the same look.
- Quality sliderChoose any quality from 10% to 100%.
- Before and after sizeThe preview shows the WebP size and the original JPG size.
- Bulk conversionConvert a full folder of JPG photos at once.
- Same dimensionsPixel width and height stay unchanged.
- ZIP downloadDownload all WebP files together in one ZIP.
How to use the JPG to WebP
- Add JPG photos Drop JPG or JPEG files on the box, click Choose files, or paste with Ctrl+V.
- Set the quality Move the Quality slider and watch the size in the preview.
- Convert to WebP Click Convert to WebP to process every file.
- Download Save each WebP file or click Download all (ZIP).
JPG to WebP at a glance
| Price | Free |
|---|---|
| Input formats | JPG, JPEG |
| Output formats | WebP |
| Quality range | 10–100% (default 90%) |
| Typical saving | About 25–35% smaller than JPG |
| Batch | Yes – ZIP download |
| Processing | In your browser – files are not uploaded |
When to use it
- Speed up a WordPress blog by uploading WebP instead of JPG images.
- Make product photos lighter for an online store with many images.
- Reduce image weight to improve Core Web Vitals and page speed scores.
- Save storage space for a large photo collection used on the web.
- Prepare lighter images for a mobile app or landing page.
Tips for the best result
- For most web photos, 75–85% WebP quality looks like the original JPG and saves the most space.
- Resize huge camera photos to your site width first; the size saving is much bigger.
- Keep your original JPG files as a backup in case you need them for print or email.
Frequently asked questions
Is WebP better than JPG for websites?
Usually yes. WebP gives smaller files at the same visual quality, so pages load faster and use less data. It is supported by all major current browsers. JPG is still useful for email, print and older software, so keep your originals.
How much smaller is WebP than JPG?
Often about 25–35% smaller at a similar look, but it depends on the photo and the quality you pick. Detailed photos save less, smooth images save more. The preview shows the exact new size before you download.
Can I upload WebP images to WordPress?
Yes. WordPress has supported WebP uploads since version 5.8. You can add WebP images to posts, pages and the media library like any JPG. Most modern themes and page builders display them without extra plugins.
What quality should I use for JPG to WebP?
Start with 80%. For hero images where detail matters, use 85–90%. For small thumbnails, 70–75% is often fine. Compare the preview with the original and pick the lowest setting that still looks good to you.
Do all browsers support WebP?
All current versions of Chrome, Edge, Firefox, Safari and Opera support WebP, on both desktop and mobile. Only very old browsers, like Internet Explorer, cannot show it. For those rare cases, a JPG fallback can be used.
Last updated October 29, 2026 by the Img Stop team.